Korean Journal of Applied Biomechanics (한국운동역학회지)

Korean Society of Applied Biomechanics (한국운동역학회)
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The Differences in the Ski Carving Turn Motion According to Level of Exper tise

스키 카빙턴 동작 시 기술 수준에 따른 동작의 차이 연구

  • Eun, Seon-Deok (Research Institute of Sports Science, College of Natural Science, Hallym University) ;
  • Hyun, Moo-Sung (Department of Sports and Leisure Studies, College of Fineart and Physical Education, Kangnam University)
  • 은선덕 (한림대학교 자연과학대학 체육과학연구소) ;
  • 현무성 (강남대학교 예체능대학 사회체육학과)
  • Received : 2010.07.31
  • Accepted : 2010.09.15
  • Published : 2010.09.30
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Abstract

The purpose of this research was to investigate the differences in the ski carving turn motion according to level of expertise. The posture and movement of 6 skiers nearby the fall-line was evaluated with a biomechanical approach focusing the rotational mechanics. The slope was at an angle of $9^{\circ}$ and the following variables were measured and calculated: tangential velocity, change of COM height after passing fall-line, width between feet, angle between upper body and thigh, trunk angle, average radius of curvature and average centripetal force. The expert skiers minimized their center of mass height movement and maintained the width of between their feet after the passing the fall-line in comparison with the beginners and intermediate skiers. The experts restrained themselves from pushing their upper body downward after the turn to maximize the centripetal force. The experts in comparison with the beginners and intermediate skiers during the turn didn't have to reduce their radius of curvature to maintain a high centripetal force. It was concluded, that the most important factor affecting the centripetal force, was for the beginners and intermediate skiers, to minimize their movement while using the appropriate amount of edging.

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References

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